LEMON Manuals
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Engine Performance
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Engine Control System & Fuel System - 5.3L - DTC P0420 To DTC P3449
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DTC P1682
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Repair Procedures
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Repair Procedures
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Relay Replacement (Attached to Wire Harness)
or
Relay Replacement (Within an Electrical Center)
Underhood Electrical Center or Junction Block Replacement
Engine Control Module Replacement
Engine Control Module Programming and Setup (5.3L)